Is the value of a ticket considered?
If I were to invite an escort to an event, I'd expect to pay for their time, of course. I wouldn't be so bold as to expect to discount the entire value of the ticket. But if the ticket is $1k+, that's not nothing. They may not be interested at all in the event and wouldn't pay even a dollar to attend, so that's one end of the spectrum, or they may absolutely love it and would have paid the entire amount themselves if it weren't sold out - that's the other end of the spectrum. Realistically or on average, how are such things handled?